I’ve got the OBD11 app on my phone and key fob and switch activation for tailgate is on there for the Allspace.
As I understand it OBD11 dont offer options you need a dealer code for. For example I was toying with the dealer option of voice activation for the stereo at £185. OBD11 dont offer that as it needs a dealer pin.
From what I understand your only adding a partial feature as the electric tail gate is already active so no pin is required.
I’ll see when the car comes what the options are.